20021000112222 has 64 divisors (see below), whose sum is σ = 40217268199680. Its totient is φ = 6644533593600.

The previous prime is 20021000112221. The next prime is 20021000112257. The reversal of 20021000112222 is 22221100012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021000112221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5196208848 + ... + 5196212700.

It is an arithmetic number, because the mean of its divisors is an integer number (628394815620).

Almost surely, 2^{20021000112222} is an apocalyptic number.

20021000112222 is an abundant number, since it is smaller than the sum of its proper divisors (20196268087458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021000112222 is a wasteful number, since it uses less digits than its factorization.

20021000112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8009.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20021000112222 its reverse (22221100012002), we get a palindrome (42242100124224).

The spelling of 20021000112222 in words is "twenty trillion, twenty-one billion, one hundred twelve thousand, two hundred twenty-two".